210203312 has 80 divisors (see below), whose sum is σ = 467112960. Its totient is φ = 90758400.

The previous prime is 210203311. The next prime is 210203359. The reversal of 210203312 is 213302012.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (210203311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 321578 + ... + 322230.

It is an arithmetic number, because the mean of its divisors is an integer number (5838912).

Almost surely, 2^210203312 is an apocalyptic number.

210203312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 210203312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (233556480).

210203312 is an abundant number, since it is smaller than the sum of its proper divisors (256909648).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210203312 is a wasteful number, since it uses less digits than its factorization.

210203312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 762 (or 756 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 210203312 is about 14498.3899795805. The cubic root of 210203312 is about 594.5839541454.

Adding to 210203312 its reverse (213302012), we get a palindrome (423505324).

The spelling of 210203312 in words is "two hundred ten million, two hundred three thousand, three hundred twelve".